what size drill bit to tap for 1/8npt??

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04-29-2007, 05:12 PM

blackeg

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what size drill bit to tap for 1/8npt??

i have to tap my manifold for my egt sensor. i got the 1/8 tap but i dont know what drill bit size to use and searching for this came up with nothing

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04-29-2007, 05:35 PM

Boilermaker1

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Google is awesome
http://www.korit.com/tapndrill.htm

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04-29-2007, 06:36 PM

B and B

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Re: (Boilermaker1)

So it's letter R?

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04-29-2007, 06:47 PM

boosted-EG6

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Re: what size drill bit to tap for 1/8npt?? (blackeg)

21/64 drill bit

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